From 904ba06b0a6c9333a032d2da553efc386b0a2916 Mon Sep 17 00:00:00 2001 From: "jan.nijtmans" Date: Mon, 24 Feb 2020 11:07:18 +0000 Subject: Add -Wpointer-arith warning to C-compile. Fix gcc(-9) warning. --- generic/tclClock.c | 2 +- unix/configure | 5 ++--- unix/tcl.m4 | 2 +- win/configure | 46 ++++++++++++++++++++++------------------------ win/tcl.m4 | 44 +++++++++++++++++++------------------------- 5 files changed, 45 insertions(+), 54 deletions(-) diff --git a/generic/tclClock.c b/generic/tclClock.c index b019ef9..cd4555e 100644 --- a/generic/tclClock.c +++ b/generic/tclClock.c @@ -1020,7 +1020,7 @@ ConvertUTCToLocalUsingC( time_t tock; struct tm* timeVal; /* Time after conversion */ int diff; /* Time zone diff local-Greenwich */ - char buffer[8]; /* Buffer for time zone name */ + char buffer[16]; /* Buffer for time zone name */ /* * Use 'localtime' to determine local year, month, day, time of day. diff --git a/unix/configure b/unix/configure index a84226f..a06ac5a 100755 --- a/unix/configure +++ b/unix/configure @@ -6649,7 +6649,7 @@ fi CFLAGS_OPTIMIZE=-O if test "$GCC" = yes; then - CFLAGS_WARNING="-Wall" + CFLAGS_WARNING="-Wall -Wpointer-arith" else CFLAGS_WARNING="" @@ -7576,7 +7576,6 @@ fi # Step 4 will set the necessary variables DL_OBJS="" SHLIB_LD_LIBS="" - LDFLAGS="" ;; *) case "$arch" in @@ -7598,7 +7597,7 @@ fi LD_SEARCH_FLAGS=${CC_SEARCH_FLAGS} SHARED_LIB_SUFFIX='${TCL_TRIM_DOTS}.so.${SHLIB_VERSION}' - LDFLAGS="-Wl,-export-dynamic" + LDFLAGS="$LDFLAGS -Wl,-export-dynamic" ;; esac case "$arch" in diff --git a/unix/tcl.m4 b/unix/tcl.m4 index 75608b5..0dd4d77 100644 --- a/unix/tcl.m4 +++ b/unix/tcl.m4 @@ -1142,7 +1142,7 @@ AC_DEFUN([SC_CONFIG_CFLAGS], [ CFLAGS_DEBUG=-g CFLAGS_OPTIMIZE=-O AS_IF([test "$GCC" = yes], [ - CFLAGS_WARNING="-Wall" + CFLAGS_WARNING="-Wall -Wpointer-arith" ], [CFLAGS_WARNING=""]) AC_CHECK_TOOL(AR, ar) STLIB_LD='${AR} cr' diff --git a/win/configure b/win/configure index f0e7554..f52e22c 100755 --- a/win/configure +++ b/win/configure @@ -3221,6 +3221,11 @@ echo "${ECHO_T}$CELIB_DIR" >&6 # Set some defaults (may get changed below) EXTRA_CFLAGS="" +cat >>confdefs.h <<\_ACEOF +#define MODULE_SCOPE extern +_ACEOF + + # Extract the first word of "cygpath", so it can be a program name with args. set dummy cygpath; ac_word=$2 echo "$as_me:$LINENO: checking for $ac_word" >&5 @@ -3278,7 +3283,7 @@ cat confdefs.h >>conftest.$ac_ext cat >>conftest.$ac_ext <<_ACEOF /* end confdefs.h. */ - #ifndef __WIN32__ + #ifndef _WIN32 #error cross-compiler #endif @@ -3401,7 +3406,7 @@ cat confdefs.h >>conftest.$ac_ext cat >>conftest.$ac_ext <<_ACEOF /* end confdefs.h. */ - #ifdef __WIN32__ + #ifdef _WIN32 #error win32 #endif @@ -3458,7 +3463,7 @@ echo "$as_me: error: ${CC} cannot produce win32 executables." >&2;} echo $ECHO_N "checking compiler flags... $ECHO_C" >&6 if test "${GCC}" = "yes" ; then SHLIB_LD="" - SHLIB_LD_LIBS="" + SHLIB_LD_LIBS='${LIBS}' LIBS="-lws2_32" # mingw needs to link ole32 and oleaut32 for [send], but MSVC doesn't LIBS_GUI="-lgdi32 -lcomdlg32 -limm32 -lcomctl32 -lshell32 -luuid -lole32 -loleaut32" @@ -3479,9 +3484,6 @@ echo $ECHO_N "checking compiler flags... $ECHO_C" >&6 echo "$as_me:$LINENO: result: using static flags" >&5 echo "${ECHO_T}using static flags" >&6 runtime= - MAKE_DLL="echo " - LIBSUFFIX="s\${DBGX}.a" - LIBFLAGSUFFIX="s\${DBGX}" LIBRARIES="\${STATIC_LIBRARIES}" EXESUFFIX="s\${DBGX}.exe" else @@ -3499,29 +3501,29 @@ echo "$as_me: error: ${CC} does not support the -shared option. fi runtime= - # Link with gcc since ld does not link to default libs like - # -luser32 and -lmsvcrt by default. - SHLIB_LD='${CC} -shared' - SHLIB_LD_LIBS='${LIBS}' # Add SHLIB_LD_LIBS to the Make rule, not here. - MAKE_DLL="\${SHLIB_LD} \$(LDFLAGS) -o \$@ ${extra_ldflags} \ - -Wl,--out-implib,\$(patsubst %.dll,lib%.a,\$@)" - LIBSUFFIX="\${DBGX}.a" - LIBFLAGSUFFIX="\${DBGX}" EXESUFFIX="\${DBGX}.exe" LIBRARIES="\${SHARED_LIBRARIES}" fi + # Link with gcc since ld does not link to default libs like + # -luser32 and -lmsvcrt by default. + SHLIB_LD='${CC} -shared' + SHLIB_LD_LIBS='${LIBS}' + MAKE_DLL="\${SHLIB_LD} \$(LDFLAGS) -o \$@ ${extra_ldflags} \ + -Wl,--out-implib,\$(patsubst %.dll,lib%.a,\$@)" # DLLSUFFIX is separate because it is the building block for # users of tclConfig.sh that may build shared or static. DLLSUFFIX="\${DBGX}.dll" + LIBSUFFIX="\${DBGX}.a" + LIBFLAGSUFFIX="\${DBGX}" SHLIB_SUFFIX=.dll EXTRA_CFLAGS="${extra_cflags}" CFLAGS_DEBUG=-g CFLAGS_OPTIMIZE="-O2 -fomit-frame-pointer" - CFLAGS_WARNING="-Wall" + CFLAGS_WARNING="-Wall -Wdeclaration-after-statement -Wpointer-arith" LDFLAGS_DEBUG= LDFLAGS_OPTIMIZE= @@ -3622,24 +3624,16 @@ echo "${ECHO_T} Using 64-bit $MACHINE mode" >&6 echo "$as_me:$LINENO: result: using static flags" >&5 echo "${ECHO_T}using static flags" >&6 runtime=-MT - MAKE_DLL="echo " - LIBSUFFIX="s\${DBGX}.lib" - LIBFLAGSUFFIX="s\${DBGX}" LIBRARIES="\${STATIC_LIBRARIES}" EXESUFFIX="s\${DBGX}.exe" - SHLIB_LD_LIBS="" else # dynamic echo "$as_me:$LINENO: result: using shared flags" >&5 echo "${ECHO_T}using shared flags" >&6 runtime=-MD # Add SHLIB_LD_LIBS to the Make rule, not here. - MAKE_DLL="\${SHLIB_LD} \$(LDFLAGS) -out:\$@" - LIBSUFFIX="\${DBGX}.lib" - LIBFLAGSUFFIX="\${DBGX}" - EXESUFFIX="\${DBGX}.exe" LIBRARIES="\${SHARED_LIBRARIES}" - SHLIB_LD_LIBS='${LIBS}' + EXESUFFIX="\${DBGX}.exe" case "x`echo \${VisualStudioVersion}`" in x1[4-9]*) lflags="${lflags} -nodefaultlib:libucrt.lib" @@ -3648,9 +3642,12 @@ echo "${ECHO_T}using shared flags" >&6 ;; esac fi + MAKE_DLL="\${SHLIB_LD} \$(LDFLAGS) -out:\$@" # DLLSUFFIX is separate because it is the building block for # users of tclConfig.sh that may build shared or static. DLLSUFFIX="\${DBGX}.dll" + LIBSUFFIX="\${DBGX}.lib" + LIBFLAGSUFFIX="\${DBGX}" if test "$do64bit" != "no" ; then case "$do64bit" in @@ -3803,6 +3800,7 @@ _ACEOF fi SHLIB_LD="${LINKBIN} -dll -incremental:no ${lflags}" + SHLIB_LD_LIBS='${LIBS}' # link -lib only works when -lib is the first arg STLIB_LD="${LINKBIN} -lib ${lflags}" RC_OUT=-fo diff --git a/win/tcl.m4 b/win/tcl.m4 index 9703a9a..5abc0e6 100644 --- a/win/tcl.m4 +++ b/win/tcl.m4 @@ -247,7 +247,7 @@ AC_DEFUN([SC_PATH_TKCONFIG], [ # # Results: # -# Subst the following vars: +# Substitutes the following vars: # TCL_BIN_DIR # TCL_SRC_DIR # TCL_LIB_FILE @@ -557,6 +557,7 @@ AC_DEFUN([SC_CONFIG_CFLAGS], [ # Set some defaults (may get changed below) EXTRA_CFLAGS="" + AC_DEFINE(MODULE_SCOPE, [extern], [No need to mark inidividual symbols as hidden]) AC_CHECK_PROG(CYGPATH, cygpath, cygpath -m, echo) @@ -571,7 +572,7 @@ AC_DEFUN([SC_CONFIG_CFLAGS], [ AC_CACHE_CHECK(for cross-compile version of gcc, ac_cv_cross, AC_TRY_COMPILE([ - #ifndef __WIN32__ + #ifndef _WIN32 #error cross-compiler #endif ], [], @@ -638,7 +639,7 @@ AC_DEFUN([SC_CONFIG_CFLAGS], [ AC_CACHE_CHECK(for mingw32 version of gcc, ac_cv_win32, AC_TRY_COMPILE([ - #ifdef __WIN32__ + #ifdef _WIN32 #error win32 #endif ], [], @@ -653,7 +654,7 @@ AC_DEFUN([SC_CONFIG_CFLAGS], [ AC_MSG_CHECKING([compiler flags]) if test "${GCC}" = "yes" ; then SHLIB_LD="" - SHLIB_LD_LIBS="" + SHLIB_LD_LIBS='${LIBS}' LIBS="-lws2_32" # mingw needs to link ole32 and oleaut32 for [send], but MSVC doesn't LIBS_GUI="-lgdi32 -lcomdlg32 -limm32 -lcomctl32 -lshell32 -luuid -lole32 -loleaut32" @@ -673,9 +674,6 @@ AC_DEFUN([SC_CONFIG_CFLAGS], [ # static AC_MSG_RESULT([using static flags]) runtime= - MAKE_DLL="echo " - LIBSUFFIX="s\${DBGX}.a" - LIBFLAGSUFFIX="s\${DBGX}" LIBRARIES="\${STATIC_LIBRARIES}" EXESUFFIX="s\${DBGX}.exe" else @@ -689,29 +687,29 @@ AC_DEFUN([SC_CONFIG_CFLAGS], [ fi runtime= - # Link with gcc since ld does not link to default libs like - # -luser32 and -lmsvcrt by default. - SHLIB_LD='${CC} -shared' - SHLIB_LD_LIBS='${LIBS}' # Add SHLIB_LD_LIBS to the Make rule, not here. - MAKE_DLL="\${SHLIB_LD} \$(LDFLAGS) -o \[$]@ ${extra_ldflags} \ - -Wl,--out-implib,\$(patsubst %.dll,lib%.a,\[$]@)" - LIBSUFFIX="\${DBGX}.a" - LIBFLAGSUFFIX="\${DBGX}" EXESUFFIX="\${DBGX}.exe" LIBRARIES="\${SHARED_LIBRARIES}" fi + # Link with gcc since ld does not link to default libs like + # -luser32 and -lmsvcrt by default. + SHLIB_LD='${CC} -shared' + SHLIB_LD_LIBS='${LIBS}' + MAKE_DLL="\${SHLIB_LD} \$(LDFLAGS) -o \[$]@ ${extra_ldflags} \ + -Wl,--out-implib,\$(patsubst %.dll,lib%.a,\[$]@)" # DLLSUFFIX is separate because it is the building block for # users of tclConfig.sh that may build shared or static. DLLSUFFIX="\${DBGX}.dll" + LIBSUFFIX="\${DBGX}.a" + LIBFLAGSUFFIX="\${DBGX}" SHLIB_SUFFIX=.dll EXTRA_CFLAGS="${extra_cflags}" CFLAGS_DEBUG=-g CFLAGS_OPTIMIZE="-O2 -fomit-frame-pointer" - CFLAGS_WARNING="-Wall" + CFLAGS_WARNING="-Wall -Wdeclaration-after-statement -Wpointer-arith" LDFLAGS_DEBUG= LDFLAGS_OPTIMIZE= @@ -766,23 +764,15 @@ AC_DEFUN([SC_CONFIG_CFLAGS], [ # static AC_MSG_RESULT([using static flags]) runtime=-MT - MAKE_DLL="echo " - LIBSUFFIX="s\${DBGX}.lib" - LIBFLAGSUFFIX="s\${DBGX}" LIBRARIES="\${STATIC_LIBRARIES}" EXESUFFIX="s\${DBGX}.exe" - SHLIB_LD_LIBS="" else # dynamic AC_MSG_RESULT([using shared flags]) runtime=-MD # Add SHLIB_LD_LIBS to the Make rule, not here. - MAKE_DLL="\${SHLIB_LD} \$(LDFLAGS) -out:\[$]@" - LIBSUFFIX="\${DBGX}.lib" - LIBFLAGSUFFIX="\${DBGX}" - EXESUFFIX="\${DBGX}.exe" LIBRARIES="\${SHARED_LIBRARIES}" - SHLIB_LD_LIBS='${LIBS}' + EXESUFFIX="\${DBGX}.exe" case "x`echo \${VisualStudioVersion}`" in x1[[4-9]]*) lflags="${lflags} -nodefaultlib:libucrt.lib" @@ -791,9 +781,12 @@ AC_DEFUN([SC_CONFIG_CFLAGS], [ ;; esac fi + MAKE_DLL="\${SHLIB_LD} \$(LDFLAGS) -out:\[$]@" # DLLSUFFIX is separate because it is the building block for # users of tclConfig.sh that may build shared or static. DLLSUFFIX="\${DBGX}.dll" + LIBSUFFIX="\${DBGX}.lib" + LIBFLAGSUFFIX="\${DBGX}" if test "$do64bit" != "no" ; then case "$do64bit" in @@ -932,6 +925,7 @@ AC_DEFUN([SC_CONFIG_CFLAGS], [ fi SHLIB_LD="${LINKBIN} -dll -incremental:no ${lflags}" + SHLIB_LD_LIBS='${LIBS}' # link -lib only works when -lib is the first arg STLIB_LD="${LINKBIN} -lib ${lflags}" RC_OUT=-fo -- cgit v0.12